


Which are they?

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  • On the basis that this question appears to be devolving into a list of people posting their one or two set suggestions, and user23 has sadly moved on, I'm going to turn this into a Community Wiki and merge some of these answers. – Zhaph - Ben Duguid Nov 7 '14 at 9:06



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  • This is by far my favorite set that I've got on display. Also, I agree with the answer. It's got the highest markuped value. – Nathan Oct 23 '14 at 21:56
  • Cloud city, in 2005 it cost $100. Now for a new set it costs at least $1000 – user4141 Nov 6 '14 at 22:11



6399 Airport Shuttle

Bricklink items for sale



1490 Lego Bank

Bricklink items for sale

  • Rare limited release set
  • Many stickers unique to this set and almost impossible to find


7750 Steam Engine with Tender

Bricklink items for sale





  • Upvote because monorail – Henrique de Sousa Oct 1 '19 at 14:10


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There is a website that tracks price changes on Amazon, Bricklink and E-bay in order to try to compile an index. It has an interesting page called top retired sets, ranking sets by gain compared to initial purchase price.

At the time of this writing it lists 6166-1 (a big tub of LEGO) as number one with 65% gain, and 7200-1 (final duel) as number two with 31% gain. The previously mentioned Millenium Falcon is also on the list, with 21% gain. Seems like a good indicator.

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The most valued sets, when not using price as a criterion, will vary from collector to collector, based on their interests.

In my experience doing LEGO Customer Service, collectors of all ages tended to focus on particular themes. While the Ultimate Collector's Edition Millennium Falcon may be the most prized jewel to a Star Wars collector, it may have little to no appeal to an avid Train collector. It was very hard to talk about any themes outside the fan's specific interest. Even then, a Trains person may have interest in the MAERSK ship(not a train, but related), but none in the Hogwart's Express. Another sought-after set is the Grand Carousel, which isn't likely of interest to someone that only collects licensed sets.

For myself, the most prized LEGO toy I could attain is an authentic wooden set from the pre-ABS era. The closest thing I have to it is the 2011 employee-only duck that resembles the pre-building system era wooden duck draw toy the company made (post-yo-yo fad, using the leftover yo-yo halves as wheels).

Other categories of collectors are completionists who may value SDCC Bizarro minifig or a limited UK Sun bag as their most prized possession (similar to the Mr. Gold mentioned before.)

The currently-selected answer is worded to be exclusively about how expensive the item is, which the question specifically requested not be used for this judgment. However, lacking any other criteria, it's not feasible to give a specific answer.

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There are now loads of sets which could be considered to be the most valuable. Here is a list of my choices

  1. 10179 UCS Millenium Falcon
  2. 10182 Cafe Corner
  3. Mr Gold
  4. 10196 Grand Carousel
  5. 10184 Town Plan
  6. Chrome Gold C3PO (only 100 made)
  7. 10189 Taj Mahal
  8. 5004590 Bat-Pod (only 1000 worldwide and will surely increase in value tremendously)

This list is only my opinion. Value is very dependent on condition and personal preference. The best way to fully know a products value is to check completed item prices on eBay and current listings on Amazon (not as accurate). Sites like Brickpicker will give you rough prices.


I must say, a very valuable one would be the exclusive Maersk container ship. the original 2004 set (not the 2011 reissue!) is worth a lot of money, considering they only made a handful. other than that, the Unitron Monorail can go for quite a bit MISB (Mint In Sealed Box) nowadays.
